s1="123"
s2="321"

i1=1
i2=2

f1=1.222
f2=333.222

flag1=True
flag2=False

print(s1+s2)
print(s1*4)
print("sliflejfalsijef+ \n +fsefasefasef")
print("\"")
print("111\b")
print("12 \r 23")
print("asefsaefsaefasefsefsefaef\
edwerwewed")

s3="ganyiyang"
print(s3[3:9])
print(s3[0:3])
print(s3[0])
